Soybean Alternaria leaf spot

Soybean Alternaria leaf spotAlternaria tenuissima

  • Seed become small and shrivelled. Dark, irregular, spreading sunken areas occur on the seed.
  • The appearance of brown, necrotic spots with concentric rings on foliage, which coalesce and form large necrotic areas.
  • Infected leaves later in the season dry out and drop prematurely.
  • Use healthy/certified seeds
  • Destroy crop residues from fields.
  • Seed treatment with thiram + carbendazium (2:1) @ 3g/kg seed.
  • Use Mancozeb or copper fungicide at 2.5g/l or carbendazim 1 g/lit.



  • TamilNadu Agritech Portal
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